John McEnroe of the USA celebrates during the Lawn Tennis Championships at...John McEnroe of the USA celebrates during the Lawn Tennis Championships at Wimbledon in London. \ Mandatory Credit: Steve Powell/AllsportLessMore

John McEnroe of the United States throws his racket next to his partner Patrick McEnroe of the United States during their men's champions doubles match against Cedric Pioline of France and Mats Wilander of Sweden on Day Eleven of the...More

John McEnroe of the United States throws his racket next to his partner Patrick...John McEnroe of the United States throws his racket next to his partner Patrick McEnroe of the United States during their men's champions doubles match against Cedric Pioline of France and Mats Wilander of Sweden on Day Eleven of the 2013 US Open at USTA Billie Jean King National Tennis Center on September 5, 2013 in the Flushing neighborhood of the Queens borough of New York City.LessMore

John McEnroe of United States celebrates during match against Jeremy Bates of Great...John McEnroe of United States celebrates during match against Jeremy Bates of Great Britain on Day Two of the Statoil Masters Tennis at the Royal Albert Hall on December 6, 2012 in London, England.LessMore

Tennis players John McEnroe (L) and Andy Murray pose during a practice session on Day Eight of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 28, 2011 in London, England.

Tennis players John McEnroe (L) and Andy Murray pose during a practice session on...Tennis players John McEnroe (L) and Andy Murray pose during a practice session on Day Eight of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 28, 2011 in London, England.LessMore

John McEnroe serves against Jim Courier during the Legends Singles Final on day five of the Countrywide Classic in Straus Stadium at the Los Angeles Tennis Center-UCLA on August 8, 2008 in Westwood, California.

John McEnroe serves against Jim Courier during the Legends Singles Final on day...John McEnroe serves against Jim Courier during the Legends Singles Final on day five of the Countrywide Classic in Straus Stadium at the Los Angeles Tennis Center-UCLA on August 8, 2008 in Westwood, California.LessMore

John McEnroe of USA celebrates his victory against Andrew Murray of Great Britain...John McEnroe of USA celebrates his victory against Andrew Murray of Great Britain during the first round of the Superset Tennis tournament at Wembley Arena on October 3, 2004 in London.LessMore

John McEnroe of the USA argues with an umpire over a decision called during the Wimbledon Lawn Tennis Championship held at the All England Lawn Tennis and Croquet Club, in London. \ Mandatory Credit: Simon Bruty /Allsport

John McEnroe of the USA argues with an umpire over a decision called during the...John McEnroe of the USA argues with an umpire over a decision called during the Wimbledon Lawn Tennis Championship held at the All England Lawn Tennis and Croquet Club, in London. \ Mandatory Credit: Simon Bruty /AllsportLessMore

A portrait of John McEnroe of the USA in action during the French Open. \ Mandatory...A portrait of John McEnroe of the USA in action during the French Open. \ Mandatory Credit: Allsport UK /AllsportLessMore